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A278064 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1212
133
1413
1514
165
1715
186
197
2016
2118
2210
238
2418
2522
2612
2719
2814
2924
3011
3123
3227
3316
3413
3517
3615
3726
3820
3910
4027
4136
4220
4315
4442
4514
4631
4721
4834
4928
5015
5123
5250
5314
5431
5554
5624
5719
5823
5942
6032
6131
6234
6351
6414
6536
6661
6729
6817
6977

[1,2,3,4,5,6,7,8,9,10,11,12,3,13,14,5,15,6,7,16,
 18,10,8,18,22,12,19,14,24,11,23,27,16,13,17,15,26,
 20,10,27,36,20,15,42,14,31,21,34,28,15,23,50,14,
 31,54,24,19,23,42,32,31,34,51,14,36,61,29,17,77]